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DRY ANALYSIS ELEMENT FOR THE ANALYSIS OF IRON IONS BACKGROUND OF THE INVENTION 1. Field of the Invention
| Content Provider | Semantic Scholar |
|---|---|
| Author | Katsuyama, Harumi |
| Copyright Year | 2017 |
| Abstract | A dry analysis element for the analysis of iron ions, which is improved in selectivity so that iron ions can be analyzed reliably at a high sensitivity without the inter ferences by the presence of hindering Cu2+ and/or Zn2+ ions. The analysis element comprises a detection reagent layer containing Nitro-PAPS acting as a chelat ing agent and a cationic compound, and a pre-treating layer containing a Cu2+-specific chelating agent. The analysis element further includes a pH buffer for keep ing the pH value of the detection reagent layer within the range of from pH 3.0 to 5.0. The pH adjusting buffer may be contained in either one of the detection reagent layer or the pre-treating layer, or may be contained in another layer. The detection reagent layer may be com posed of a coloring reagent layer containing Nitro PAPS acting as the chelating agent, and a diffusion-pre venting layer laminated on the coloring reagent layer and containing the cationic compound. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://patentimages.storage.googleapis.com/53/54/4e/3fb7eac1680272/US5186894.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Patent |
